Liquid Nitrogen To do list

This is a wish list of liquid nitrogen projects in no particular order. Some small and interesting to me and others to try things I have not seen on the net before.
“Continue reading” to see my eclectic wish list of future projects.

LED’s. Apparently red changes to Yellow and blue turns off.
https://plus.google.com/u/0/108941983487083451766/posts/S1HRnRhVjqs

One can run a droplet of water on a hot ratcheted surface uphill. This is something I want to try with LN2 as well.
Running a Stirling engine on LN2 would be interesting.
I would like to get a superconductor for levitation experiments as well.

How about some argon ice. Argon boiling point 87, melting point 83. LN2 77.

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